Donald Trump has promised to sign a trade deal with Britain "very very quickly" as he told Theresa May: "There is no country that could possibly be closer than our countries."

The US President said he had developed a "very special relationship" with Mrs May as the two leaders sat down for a one-on-one meeting at the G20 summit in Hamburg this morning.

Mr Trump said: "We will do a very big deal, a very powerful deal. Trade will be a big factor between our two countries."

The President also confirmed he will be coming to Britain for a State visit, though he did not specify when.

He also told Mrs May he had "a tremendous meeting" with President Vladimir Putin of Russia on Friday, which lasted for two and a quarter hours.

The President's comments are a huge boost for Mrs May, and come a day after China's President Xi Jinping made hugely positive comments about Brexit. It means Mrs May can leave Hamburg later today having made progress on trade with the leaders of the world's two biggest economies.

Trump addresses the media during his talks with the Prime Minister CREDIT: GETTY
Mr Trump said: "There is no country that could possibly be closer than our countries .

"We have been working on a trade deal which will be a very, very big deal a very powerful deal, great for both countries and I think we will have that done very, very quickly."

He added: Prime Minister May and I have developed a very special relationship and I think trade will be a very big factor between our two countries."